In 2012 I started testing a new hydrogen peroxide based bleach with an acid as a stabilizer, citric acid was the first choice, and these were my first positive results with Fomapan R100 on 16mm film.
1959
2012
1967
2002
2019
1956
1993
2004
1968
1954
1930
1963
1938
1958
1973
2011
1965
2007